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Wolstenholme Bronze Powders of Bolton, Lancashire.
1967 New issue of shares - presumably incorporated as a public company; chairman P. L. M. Rink. The company claimed to be one of the 2 largest exporters of bronze powder in the world
1968 Queen's Award to Industry for Export Achievement 
1979 Changed name to Wolstenholme Rink, reflecting the surnames of the 2 founders.
1996 Disposal of the resin division of Wolstenholme International
2000 Acquired by Rutland Trust